Rotary explosive-engine.



R. E. ZUENDT. 4ROTARY EXPLOSIVE ENG|NE.`

APPLlcATloN FILED Amso, Isls. RENEWED FEB. 28.1916.

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Patented'Apr. 18, 1916.

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R. E. ZUENDT.

ROTARY EXPLOSIVE ENGINE.

APPLICATION FILED APR. so. 1915. REMI-:WED FEB. 28,1915.

PatentedApr. 18, 1916.

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Spectncation o ltete'rs Patent. Patented dpr', l, llgll appneenea niet tanteo, rait, serial no. etat?. Renewed retruery te, 1ere. serial ire-anota a device of the above character which will combine the advantagesof a rotary engine with those of the ordinary type of reciprocatin engines.

Anot er object of the invention is the pro# vision of such device wherein the gas mixtures are compressedI before being admitted to the explosion chamber.

'A further object of my invention is the provision 'of such a device which will be positively operated thereby insuring Aa proper timin of each of the working parts e and eliminating lost motion.

A further object is to provide means whereby the expense of manufacture will be materially lessened and the efficiency of the engine materially increased.

With these and other objects in View my invention consists in certain novel features of construction, arrangement and combination of parts as will be hereinafter described and pointed out in the claims, reference being had to the accompanying drawings, in which:

Figure 1 is a side elevation partly in section, Fig. 2 is a section substantially on line 2-2 of Fig. 1, Fig. 3 is an elevation partly in section, Fig. 4 is a diagrammatic view showing relative movement of the flapvalve and its operating cam, Fig. 5 is a section on line 5-5 of Fig. 2, Fig. 6 is a perspective view of a portion of the rotor carrying radial pistons. y 4 Referring to the drawing, the casing is represented by 8 and consists of two similar sections or plates having annular channels, and which when bolted together form the annular impulse chamber 9 in which the pistons 10 carried by the rotor 11 Ht gas tight and are driven by the explosion of the gas mixture; the rotor 11 is a disk mounted between the sections or plates of the casing and is rigidly secured to the shaft 12 which passes through the casing and carries at one end the commutator orl sparking device 13, and on the opposite side of the casing the cams 14 and 15 for operating the gate'or 4flap valve 16 mounted on rock shaft 16b and the sliding valve 17 respectively. The ignition chamber 18 is transversely through the ignition chamber 18 and carries at one end a crank arm 21 to which is connected the rod 22,. the lower end of which is connected to oneend of the lever 23 whose other end is pivoted to the outside of the casing and carries at about its center the friction roller 24 which is acted on by the cam 14. A tension spring 25 is also connected at one end to the crank arm and the other end anchored to the casing, as shown in Fig. 1. j

0n the opposite 'end of rock shaft 2O are the curved presser arms or tappets- 26 and 27, the first of which acts on the plunger 28 of the gasolene pump 29-to permit charges of gasolene to enter the pipe chamber 30. On the same shaft 20 is the curved presser arm or tappet 27 which acts on air inlet valve 31, admitting air to pipe 30, the air passing through the check valves 30, mixing with gasolene and conveying the charge to the ignition or combustion chamber 18 through the check valve 30".

@n the shaft 12' as stated is a cam 15, the function of which is to operate the Hap valve or abutment 16, through the lever, 32, connecting rod 33 and crank arm 34 rigidly mounted on the rock shaft 16b carrying the said flapl valve 16, the said crank arm being attached to the tension spring 35 as shown in Fig. 1, said spring being anchored to the casing, the same as tension spring 25. Entering the top of the ignition chamber 18 is the spark plug 36 which is connected in .60 f and outer face.

suitable manner to the commutator or spark timer 13. The flap valve or abutment 16 is mounted Iat one' end in a recess 16a communiimpulse chamber and of such depth that when the flap valve or abutment- 16 is swung upward into said recess the piston 10 can pass it freely.

1n Fig. 1 the residue of a previously exploded chargefis shown by arrows as beingA expelled and a new charge being admitted to the ignition chamber, compression is accomplished by lthepressure of the compressed air only. As shown in Fig. 2 the air inlet valve'and gasolene pump valve are both openmto form a., new charge which is admitted to the combustion chamber; the new charge now having been formed and forcedV into the ignition chamber, it is about to be exploded as shown in Fig. 3; the residue of the previous charge is being forced out by one piston, while the other piston, not now Working, is compressing air in advance of it which will presentlyT act as a scavenger. The slide valve 17 is now open.

through the action and relative position of the camyld, giving communication between the ignition chamber and the impulse chamber, or space included between the Hap valve and the rear face of the piston 10, the valve 16 forming an abutment, the flap valve being dropped by the action of cam 15.

ln Fig. 4 l have illustrated by diagram showing the cam 15 only, illustrating howr flap valve 16'is just closing by reason of the declining surface of said cam 15, thus permitting compressed air in front of the idle piston to scavenge the cylinder of the previously burned. charge which is shown as ymaking its initial exhaust. The continued rotation of the upper piston 10, completely clears the piston chamber of all burned mixture. When the bent presser arm 26 releases the stem of the plunger 28 of the gasolene pump 29 so that it may return to 1ts upper portion through agency of the spring 28a, the plunger 28 draws more gasolene into the cylinder through the back checkl .valve 29a shown at Fig. 2, and at the next downward stroke of the plunger 28 forces this gasolene past the spring seatedv valve 29b into the chamber 30 where it is mixed with the compressed air charge admitted by air inlet valve 31 from the air supply.

As shown in Fig. 6 the rotor l1 has the' radial pistons 10 which extend beyond it on each side and each isprovided with suitable packing strips 10El and 10b on its side faces It will of .course be understood that the proportions` and arrangement of the various movable parts are such that with the proper timing of the relative msdoae movement of the various coacting parts, the explosions are very rapid and that a high velocity of motion is given the engine shaft from which the power may be translated to various uses. l claim:

ture, a passage from said ignition chamber iy to the impulse cylinder, a slide valve mount- 1. A rotary explosive engine comprising ed on a rock shaft in said ignition chamber and controlling said passage, a recess in the casing in communication with said passage, a swinging abutment mounted on a rock shaft in said recess, a crank arm mounted SOY on said rock shaft, a crank arm mounted on the rock shaft actuating rotor mounted on amain shaft within the casing, cams mounted on said shaft exteriorl-y of the casing, levers mounted at one end to the outer 'wall ofthe casing, rods at the opposite ends of thesaid levers connected to the crank arms of the respective rock shafts, said levers having projections intermediate their ends adapted to contact with the cams on the main shaft, tension springs connected to the crank arms to the casing, and means carried bythe slide valve rock shaft for actuating a gasolene pump andan inlet valve, and force the mixture into the ignition chamber, and a radial piston member-carried by the rotor to receive the impulse of the exploded charge and revolubly drive said rotor.

the slide valve, a

2. A rotary explosive engine comprising a casing having an impulse chamber and a rotor having a radial piston member, an ignition chamber mounted on said casing, a

passage from said ignition chamber to the adapted to travel in said impulse chamber,

an ignition chamber mounted on said casing, an inlet to convey compressed fuel gases tofsaid ignition chamber, a passage from the ignition chamber to the impulse chamber, a flap valve mounted in the impulse chamber and lcontrolling the outlet from the ignition chamber on one side of the ignition chamber, a slide valve in the ignition chamber controlling said outlet within the ignition chamber, a rock shaft operably connected .with said slide valve, a pinev 1,180,099 l v m leading from an air supply to the inlet to form the explosive mixture, and means :1cthe ignition chamber, a spring actuated tuated b v the rotor fon actuating the rock vulve controlling said pipe, a gasolene 4pump shaft und the tappets carried thereby.

located on saidl pipe between the air inlet ROBERT E. ZUENDT. vulve and the ignition chamber, tappets car- W'itnesses: v ried by theslide valve rock shaft for actuat- JAMES L. DIBRELL,

ing the air inlet Valve and gasolene pump to E. F. BUCKLEY. I 

